Mayim Bialik Reveals All About Sheldon and Amy's Major Relationship Moment on Tonight's Big Bang Theory

If you haven't watched tonight's episode of The Big Bang Theory yet and don't want to know what Sheldon and Amy decided to do, then stop reading any further. (If that's you, make sure to bookmark this page and come back after you've watched the episode!) For the rest of you, read on...

For as much talk as there has been about Penny's haircut this season, let's not forget the multitude of story developments that have driven our favorite characters as well. At the top of that list is Sheldon and Amy's relationship, which took another giant leap forward tonight with their first overnight date. In a fort.

As soon as I saw the episode, I hopped on the phone with the wonderful Mayim Bialik (Amy) to discuss this big step in Shamy's relationship, what's to come, and how I lost it when Jim Parsons held up that absurdly hilarious cutout of Sheldon.

Glamour: First of all, that photo of Sheldon smiling on a stick was amazing.

Mayim Bialik: Yes! That was a week of rehearsal where either I was consistently laughing or he was laughing more than he was supposed to in the script. And the original picture that they used before they printed up the Sheldon version...the original picture was of Jim from Comic-Con. It was even sillier because it looked like Jim laughing.

Glamour: I need to see this.

Mayim: I actually loved the expression on his face, but they wanted a proper Sheldon look. It was really funny.

Glamour: Maybe I was too greedy, but I was so annoyed when Leonard walked in on your fort. Sheldon and Amy needed more time alone! I wanted another kiss!

Mayim: Wow. It's so funny because they kind of went back and forth on what ending they should have, but I think as with all aspects of this relationship, the smallest details mean the most to them. This was the season where they said "I love you" to each other and it took this long to get to this fort episode, and that's how slow our writers want us to take it. The sleeping-over negotiation was the biggest step in that episode.

Glamour: I was kind of hoping for "Part Two: To Be Continued..." at the end!

Mayim: I know, I know.

Glamour: What can you tease as we go into next week's episode? Do Sheldon and Amy talk about their sleepover?

Mayim: Nope. Again, every giant moment for Sheldon and Amy...it's not like a soap opera where you have to continue every plot in every episode. So there's actually been no mention of it, but I don't know what the last two episodes [that we have yet to tape] are going to bring. That might have been the big moment for Amy and Sheldon at the end of the season or maybe there's more. I really don't know. We have two more episodes to film.

Glamour: How did you and Jim decide to play the fort scene? What do you guys talk about in rehearsal?

Mayim: Our director, Mark Cendrowski, is in charge of a lot of monitoring of all those subtleties. We operate pretty similarly. We both are highly instinctual. As the writing changes, in terms of even small line changes, that can change intent, so we have to be really careful with that, and we work with Mark, but we talk about it a lot. Jim and I like to talk a lot about what we see or how surprised or how appropriate we feel things are. We're allowed to have opinions even if we don't get to act on them.

Glamour: During the filming of tonight's episode, did you go home to your kids and say, "Hey guys, Mom got to work in a fort today?!"

Mayim: Actually, they've only been to the set maybe two or three times, and they came and watched all of the fort scenes being filmed. We build forts, and we're big fort people, so I had told them about it, and their dad was able to bring them, so they could watch it. They are six and nine, and I'm pretty conservative when it comes to viewing, and I don't feel our show is appropriate for them, but all of the scenes were very G-rated, so their dad and I felt very good about them to come and see it and also just to see how it's constructed for cameras, versus how a real fort would be constructed. But they loved it, and I think that relationship is really sweet and it's all very safe and G-rated to have my kids watch those scenes being filmed.

Mayim: Yes! It was such a random convergence of people that day between my kids and Gabby Giffords!

Glamour: You guys have had some great guest stars this season, so should we expect any others to pop in before the May 7 finale?

Mayim: I have no idea. I don't know what the last two episodes of the season will be like. You know, there's been a lot of Penny and Leonard stuff this year, which I think has been really, really good. And then obviously the Howard and Bernadette plot, which has been very heavy. Raj and Emily has been a really fun part of this season. I feel there's been so much going on this season, but I don't know what they're going to focus on in particular [these last few episodes], but that's part of the fun. It's kind of like life, you never know what you're going to get!

Glamour: How will you be spending the summer hiatus?

Mayim: I do a lot of speaking engagements, so I'll be traveling all over the country a couple nights at at time this summer. There's an opportunity [to travel] for some foreign press for Big Bang Theory, so that will be fun. I want to see Jim's play [An Act of God, on Broadway]. My cousin's son is being bar-mitzvahed in St. Louis, so I'll try and go to that. We're also going to take the kids to Israel this summer to visit some family, so that will be great. Just a lot of normal stuff. I want to sit on the beach and talk with my girlfriends and let our kids play!

An all-new episode of The Big Bang Theory airs next Thursday night on CBS.

What'd you guys think of tonight's episode? Did you want more from the fort or was it just right?